https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88784
--- Comment #14 from Qi Feng <ffengqi at gcc dot gnu.org> --- Checking .original and .optimized file is just a quick method I use to check whether an optimization happened (if not happen in first and last pass, probably it didn't happen). I didn't mean or think the transform should happen in these passes. Using the second pattern, the result of transform already showed in .original file, so I think it maybe happened earlier (like in GENERIC). And I tried the first pattern again using a totally clean debug build (bootstrap disabled), still didn't see the transformation happen. I don't know what went wrong. :( (I tested it on a ppc64le machine, don't know if that matters)
